where \(C_\Upsilon \)  is a constant and \(M\)  is some appropriate mass
scale and both quantities can be associated with the specifics of the
microscopic model parameters leading to Eq. (REF ) (see,
e.g.,
Refs. [1]}, [2]}, [3]}, [4]}, [5]}, [6]}
for some explicit examples of quantum field theory model derivations
for dissipation coefficients used in WI).
